Rendering apparatus.



Patented Oct. 2, I900.

F. X. MILLER.

RENDERING APPARATUS.

(Application filed Mar. 28, 1900.)

2 Sheets-Sheai I.

(No Model.)

THE NORRIS PETERS cov rncfauma, WASHINGTON, r: c.

Patented Oct. 2, I900. F. X. MILLER.

RENDERING APPARATUS.

(Np ModoL) (Application filed Mar. 28, 1900.)

2 Sheets-Sheet 2.

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UNITED STATES;

PATENT Y FFICE.

FRANZ XAVER MILLER, OF REGENSBURG, GERMANY.

RENDERIN G APPARATUS.

SPECIFICATION forming part'of Letters Patent 'No. 659,085, dated October 2, 1900.

Application filed March 23, 1900. Serial No. 9,917. \NO model.)

To all whom it may concern:

Be it known that I, FRANZ XAVER MILLER, manufacturer, a subject of the King of Bavaria, residing at Regensburg,in the Kingdom of Bavaria, German Empire, have invented certain new and useful Improvements in Apparatus for Melting and Roasting Raw Fats, of which the following is a specification.

.This invention relates to an improved apparat us for melting and roasting raw fats.

One object of the invention is to provide a suitable mechanism for separating the useful parts from raW fats.

Another object is to provide an apparatus for removing, preserving,and rendering innocuous the vapors and gases developed by the melting of thefat.

Figure l of the accompanying drawings represents a verticalsection of this improved apparatus. Fig. 2 represents a transverse section of the drum, showing the troughs in operation. Fig. 3 represents a vertical section, on a larger scale, of the drum and the shaft. Fig. 4 represents a vertical section of the cylinder, showing a modification of the conveyer.

The same reference-letters indicate corresponding parts in all the figures.

In the form of apparatus illustrated in the drawings a vessel a, preferably in the form of a cylinder having end faces a and a is adapted to contain a conveyer b, which is supported in bearings in the faces a and a This'cylinder a is preferably made with double walls A and B, as shown in Fig. 1. When constructed as shown, the cylinder a is heated to the required temperature by the admission of steam into the jacket 0 through the pipe 0.

The helical con veyer b has a shaft 70, which extends through hearings in the end faces a and a of the cylinder a, and is providedat its opposite ends with pulleys m and m fixed thereto, and with loose pulleys m and m, respectively. Belts Z and Z pass over the respective pulleys and may be driven by any suitable driving mechanism. An aperture n, with a screw-closing device, is provided for the purpose of taking a sample when desired. In order to regulate the conveyer automatically, the shaft 7c and the bearings in the end faces a and a may be provided with screwthreads, as shown in Fig. 4. In this figure the conveyer is made in the form of a spiral b. In order to prevent any displacement of said conveyer or its endwise movement or to provide for fixing the drum e in position so asto prevent its revolution, a key 2' and keyway :4 may be used, as disclosed in Fig. l. A shaft or hollow standard dis disposed above the cylinder a and opens thereinto. This shaft d is provided at its upper end with a feed-hopper d and is preferably provided near the bottom of the feed-hopper d with a drum 2. This drum 6 is preferably filled a little more than half full with water or any suitable liquid and is provided with troughs e, which are lined with waterproof material. These troughs e communicate with the interior of the drum 6 through perforations e which permit the water contained'in the drum to pass into these troughs e behind the waterproof lining e and force it outward, and these Water-filled extended linings bear against the opposite sides of the shaft d, which, together with the practically gas-tight-fitting lateral surfaces or portions of said drum,tightly close the shaft to prevent the gases and vapors from ascending and reaching the feed-hopper,

'thus insuring at all times a hermetical closing of the apparatus.

A'tube f, preferably in the form of a pipeworm, connects the shaft 61 with the cylinder at and is adapted to cool the contents of the cylinder.

A tube It leads from the lower end of the shaft d and is provided with a branch pipe h, which leads to a vessel g, filled with water. The tube It is also provided with a pipe 2', which leads to a chimney. (Not shown.)

In the operation of this improved apparatus the raw material to be treated is put into the hopper d in a commiuuted state, from which it drops upon the drum e into the uppermost troughs e and is delivered therefrom into the shaft d, from whence it passes into the cylinder at. The helical conveyor 19, which is adapted to be axially displaced in its bearings, receives the material and conveys it from the end a to the end M, where it accumulates until it forces the conveyer 1) toward the end ct, and simultaneously with this movement of the conveyor the belt Z will slide from the working pulley m, fixed to the shaft 70, onto the adjoining loose pulley in, while at the same time the belt Z is shifted from the loose pulley mto the fixed pulley m whereby the shaft 70, and with it the conveyer b, is caused to revolve in the opposite direction and the raw material is conveyed from the end a to the end a. When a sufficient quantity of the material accumulates at the end a to move the shaft 7;. in its hearing, the shifting of the belt I from the loose pulley on to the fixed pulley in and the belt 7 from the fixed pulley m to the loose pulley m occurs. The material is thus conveyed back and forth in the cylinder a by the covveyer Z) in contact with the heated walls of the cylinder a until it has been thoroughly roasted and is in condition to be removed. The gases and vapors arising-from the treat.- ment of the raw fat escape through the tube 72. and pass out either through the pipe 1' into the chimney or through the pipe it into the vessel g, filled with water, where they are precipitated or condensed.

I claim as my invention 1. In apparatus of the character described, the combination of a vessel for receiving the material to be treated, means for heating said vessel, a feed-hopper, ashaft connecting said feed-hopper with said vessel, means arranged in said shaft to prevent the escape of gases or vapors via the feed-hopper, and a conveyer arranged in said vessel and adapted to rotate alternately in opposite directions, substantially as set forth.

2. In a vessel of the character described, the combination of a vessel for the material to be treated, means for heating said vessel, a feed-hopper, a shaft connecting said feedhopper with said vessel, means arranged in said shaft to prevent the escape of gases or vapors via the feed-hopper, a conveyer arranged in said vessel and adapted to rotate alternately in opposite directions, and a cooling or condensing vessel having pipe connection with said cooling or condensing vessel, substantially as described.

3. In an apparatus for melting and roasting fats, the combination of a vessel for receiving the material to be treated, means for heatingsaid vessel, a feed-hopper, ashaft connecting said feed-hopper with said vessel, and a revolving drum disposed in said shaft below said hopper and provided with troughs adapted to be pressed outward beyond a line bounding the circumference of said drum, to hermetically seal said shaft.

4. In an apparatus for melting and roasting fats, the combination of a vessel for receiving the material to be treated, means for heating said vessel, a feed-hopper, ashaft connecting said feed-hopper with said vessel, and a revolving drum having water therein disposed in said shaft and provided with troughs having waterproof linings, said troughs having perforations connecting them with said drum, whereby the water may enter said troughs behind said lining and press it outward beyond a line bOliildlUg the circumference of said drum.

5. In an apparatus for melting and roasting fats, the combination of a vessel for receiving the material to be treated, means for beatings-aid vessel, a feed-hopper, ashaft connecting said feed-hopper with said vessel, and a conveyer disposed in said vessel and adapt.- ed to rotate alternately in opposite directions whereby the material being treated is thoroughly heated.

6. In an apparatus for melting and roasting fats, the combination of a vessel for receiving the material to be treated, means for heating said vessel, afeed-hopper, a shaft connecting said feed-hopper with said vessel, and a tube connecting said shaft with said vessel for cooling lhecontents thereof.

7. In an apparatus for melting and roast;- ing fats, the eombinat ion of a vessel for receiving the material to be treated, means for heating said vessel, a feed-hopper, ashaft connecting said feed-hopper with said vessel, and a conveyer disposed in said vessel and adapted to rotate alternately in opposite directions whereby the material being treated is thoroughly heated, and means for preventing the displacement of said eonveyer.

8. In an apparatus for melting and roasting fats, the combination of a vessel for receiving the material to be treated, means for heating said vessel, a feed-hopper, ashaft connecting said feed-hopper with said vessel, and a conveyer disposed in said vessel and adapted to rotate alternately in opposite directions whereby the material being treated is thoroughly heated, and a key for locking said conveyer against displacement.

9. In an apparatus for roasting fats, the combination of a cylinder, means for heating said cylinder, a conveyer adapted to rotate in said cylinder alternately in opposite directions, means for supplying material to be treated to said cylinder, and means for pre venting the displacement of said conveyer.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

FRANZ XAVER MILLER.

\Vitnesses:

LUDWIG HOFFMANN, OSCAR BooK. 

